Unobtrusive measures
By: Eugene J. Webb ... [et al.].
Contributors: Webb, Eugene J., 1933-
Edition: Rev. ed.
Series: Sage classics series ;; 2
Publisher: Sage Publications; Sage Publications, Inc
Published: 2000
Place of publication: Thousand Oaks, Calif
Language: eng
Number of pages: 220
Subjects: Social sciences -- Research.
Other titles: Nonreactive measures in the social sciences.
Notes: Includes bibliographical references (p. 189-209) and index.
Rev. ed. of: Nonreactive measures in the social sciences. 2nd ed. 1981.